Film coating device and printing apparatus

Abstract

The application relates to the printing field and discloses a laminating device and a printing equipment. The laminating device comprises a mounting frame, a laminating assembly, a film releasing roller and a winding assembly. The bottom of the mounting frame is provided with universal wheels. The laminating assembly comprises a first roller shaft, a second roller shaft and a first rotary driving element. The first roller shaft and the second roller shaft are both rotationally installed on the mounting frame. The first rotary driving element is in transmission connection with the first roller shaft. The film releasing roller is rotationally installed on the mounting frame. The film releasing roller is located in the upstream direction of the laminating assembly. The winding assembly is fixedly arranged on one side of the mounting frame. The winding assembly is located in the downstream direction of the laminating assembly. The universal wheels arranged at the bottom of the mounting frame enable the laminating device to be integrally moved to the discharge end of the printer, so that the printing and laminating processes are continuously and seamlessly connected, the problems of material transfer and frequent manual carrying caused by the division of the printing and laminating processes in the prior art are avoided, the laminating efficiency is significantly improved, and the labor cost is reduced.

Description

Technical Field

[0001] This application relates to the field of printing, and more particularly to a laminating device and printing equipment. Background Technology

[0002] In the field of post-printing processing, conventional lamination processes typically require transferring printed paper or rolls to separate lamination equipment. This separate production method has significant drawbacks: the printing and lamination processes are physically separated into two independent stages, forcing production to be interrupted. Operators must manually transfer semi-finished products, unload the printed material from the printing equipment, and then transport it to the lamination station for reloading, increasing the frequency of manual intervention and disrupting the production flow. This process separation directly leads to redundant equipment layout; printing equipment and laminating machines must each occupy independent space, and a material transfer area must be reserved between them, significantly increasing the space requirements of the production site. Furthermore, since each stage requires separate operation and monitoring, personnel costs increase, and overall production efficiency is constrained. Utility Model Content

[0003] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a coating device and printing equipment.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: This application provides: A coating device, comprising: Mounting frame, the bottom of which is equipped with casters; A coating assembly, comprising a first roller, a second roller, and a first rotary drive, wherein the first roller and the second roller are rotatably mounted on the mounting frame, and the first rotary drive is drivenly connected to the first roller. A film-laying roller is rotatably mounted on the mounting frame and is located upstream of the film-coating assembly. A winding assembly is fixedly disposed on one side of the mounting frame and is located downstream of the coating assembly.

[0005] Furthermore, the mounting bracket includes two spaced-apart side plates, and at least one connecting rod is provided between the two side plates. The connecting rod is used to connect the two side plates, and the caster wheel is provided on the connecting rod.

[0006] Furthermore, the winding assembly includes a first mounting plate connected to the two side plates respectively, and at least two guide rods are disposed between the two first mounting plates. Two winding drive assemblies are disposed on the guide rods at intervals.

[0007] Furthermore, the winding drive assembly includes a second mounting plate slidably disposed on the guide rod, a second rotary drive member is fixedly disposed on one side of the second mounting plate, the rotating end of the second rotary drive member is provided with an abutment, and a fastening hole is provided on the second mounting plate, wherein a positioning member abutting against the guide rod is disposed in the fastening hole.

[0008] Furthermore, the coating device also includes a gap adjustment assembly disposed on each of the side plates, the gap adjustment assembly being used to adjust the distance between the first roller and the second roller; The gap adjustment assembly includes a linear drive component disposed on the side plate, and the telescopic end of the linear drive component is provided with a driven seat, and the second roller shaft is rotatably connected to the driven seat.

[0009] Furthermore, a first guide groove is provided on the side plate, and a roller is provided at the end of the second roller shaft, with the roller located inside the first guide groove.

[0010] Furthermore, a first winding adjustment component is provided upstream of the coating component, and a second winding adjustment component is provided in the path between the coating component and the winding component; The first winding adjustment assembly includes a connecting plate fixedly disposed on each of the side plates, a fixing block fixedly disposed on the connecting plate, a second guide groove being provided on the fixing block, an adjustment shaft being disposed between the fixing blocks, the end of the adjustment shaft being located in the second guide groove, and the fixing block having a first end and a second end, the first end being provided with a first sensor, and the second end being provided with a second sensor.

[0011] Furthermore, a rack is fixedly provided on each of the fixed blocks, and a gear is rotatably provided on the circumferential end of the adjusting shaft, the gear meshing with the rack.

[0012] Furthermore, a bottom film take-up roller is also provided on one side of the film feeding roller, and the film feeding roller and the bottom film take-up roller are connected in a driving connection.

[0013] This application also provides a printing device, including: The coating device described in any one of the above statements; A printer having a discharge end, wherein the coating device is disposed on one side of the discharge end.

[0014] This application enables the laminating device to be moved as a whole to the output end of the printer by installing casters at the bottom of the mounting frame, thus achieving a continuous and seamless connection between the printing and laminating processes. This avoids the problems caused by the separation of printing and laminating processes in the prior art, such as material transfer, frequent manual handling, production line interruption, redundant equipment layout, and large space occupation. It significantly improves laminating efficiency, reduces labor costs, and optimizes the utilization rate of production space.

[0015] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the coating device of this application from a first-view perspective; Figure 2 This shows a second-view structural schematic diagram of the coating device of this application; Figure 3 This application shows Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 A schematic diagram of the winding assembly structure of this application is shown; Figure 5 This invention provides a schematic diagram of the structure of the first winding adjustment assembly and the second winding adjustment assembly. Figure 6 A cross-sectional structural schematic diagram of the coating device of this application is shown; Figure 7 A schematic diagram of the structure of the printer and laminating device in this application is shown.

[0018] Explanation of key component symbols: 100. Side plate; 110. Caster wheel; 200. Laminating assembly; 210. First roller; 220. Second roller; 230. First rotary drive; 300. Unloading roller; 400. Rewinding assembly; 410. First mounting plate; 420. Guide rod; 430. Rewinding drive assembly; 431. Second mounting plate; 432. Second rotary drive; 433. Abutment joint; 434. Fastening hole; 500. Gap adjustment assembly; 510. Linear drive; 52. 0. Driven seat; 530. First guide groove; 540. Roller; 601. First winding adjustment assembly; 610. Connecting plate; 620. Fixing block; 621. Second guide groove; 630. Adjusting shaft; 641. First sensor; 642. Second sensor; 650. Rack; 660. Gear; 602. Second winding adjustment assembly; 700. Bottom film take-up roller; 810. First transmission wheel; 820. Second transmission wheel; 900. Guide shaft; 1000. Printer. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] This application provides a film coating device, including a mounting frame, a film coating assembly 200, a film feeding roller 300, and a winding assembly 400. The mounting frame is provided with casters 110 at the bottom. The film coating assembly 200 includes a first roller shaft 210, a second roller shaft 220, and a first rotary drive component 230. The first roller shaft 210 and the second roller shaft 220 are both rotatably mounted on the mounting frame. The first rotary drive component 230 is drively connected to the first roller shaft 210. The film feeding roller 300 is rotatably mounted on the mounting frame and is located upstream of the film coating assembly 200. The winding assembly 400 is fixedly disposed on one side of the mounting frame and is located downstream of the film coating assembly 200.

[0025] Please see Figure 1 and Figure 2 As shown, this application enables the entire laminating device to be moved by installing casters 110 at the bottom of the mounting frame. This allows the laminating device to be moved to the discharge position of the matching printing equipment for laminating the printed products. Compared with the existing method of manually unloading materials from the printing equipment and then transporting them to the laminating station for lamination, this application directly moves the laminating device to the printing equipment, thereby greatly reducing manpower consumption. Since there is no need to disassemble and reassemble materials, the laminating efficiency is greatly improved.

[0026] In this embodiment, the material printed from the printing device is printed paper. When the paper needs to be laminated, the paper from the printing device enters between the first roller 210 and the second roller 220. At the same time, the film from the film feeding roller 300 also enters between the first roller 210 and the second roller 220. Under the pressure between the first roller 210 and the second roller 220, the film is laminated onto the paper. The first roller 210 is rotated by the first rotation drive 230, thereby rolling the lamination. Next, the laminated paper is wound up at the winding assembly 400, thus completing the lamination.

[0027] In this embodiment, the first rotary drive 230 is a motor, specifically a servo motor.

[0028] In some embodiments, the mounting bracket includes two spaced-apart side plates 100, with at least one connecting rod between the two side plates 100 for connecting the two side plates 100, and casters 110 are disposed on the connecting rod.

[0029] Please continue reading. Figure 1 and Figure 2As shown, in order to facilitate the installation of the first roller shaft 210, the second roller shaft 220, the first rotary drive component 230 and the film feeding roller 300, the mounting frame consists of two spaced-apart side plates 100 and a connecting rod located between them. The number of connecting rods can be one or more. In order to facilitate the movement of the entire mounting frame, in this embodiment, there are two connecting rods, and each connecting rod has two universal wheels 110 fixed to the ground, thus forming a stable quadrilateral shape, which is more stable during movement.

[0030] In this embodiment, in order to prevent the entire mounting frame from moving around, the caster wheel 110 is a caster wheel with a locking mechanism, so that it is locked after reaching the predetermined position to prevent it from moving.

[0031] In some embodiments, the winding assembly 400 includes first mounting plates 410 respectively connected to two side plates 100, at least two guide rods 420 are disposed between the two first mounting plates 410, and two winding drive assemblies 430 are disposed on the guide rods 420 at intervals. The winding drive assembly 430 includes a second mounting plate 431 slidably disposed on the guide rods 420, a second rotary drive member 432 is fixedly disposed on one side of the second mounting plate 431, the rotating end of the second rotary drive member 432 is provided with an abutment 433, and a fastening hole 434 is provided on the second mounting plate 431, and a positioning member abutting against the guide rods 420 is disposed in the fastening hole 434.

[0032] Please see Figure 1 , Figure 2 as well as Figure 4 As shown, two take-up drive assemblies 430 are slidably mounted on the guide rod 420, and the spacing between the two take-up drive assemblies 430 can be adjusted according to the width of the printing paper or film.

[0033] Understandably, the two first mounting plates 410 are connected to the corresponding side plates 100, and two spaced guide rods 420 are installed between the two first mounting plates 410. By sliding the second mounting plate 431, the distance between the two abutment joints 433 is changed to accommodate printing paper and film of different widths and sizes. Furthermore, during winding, a spool can be placed between the two abutment joints 433. By moving the second mounting plate 431, the two abutment joints 433 abut against the end holes of the spool. Then, the two second rotary drive components 432 can be activated simultaneously to drive the spool to rotate, thereby winding the coated printing paper.

[0034] In this embodiment, the second rotary drive 432 is a motor.

[0035] During the winding process of the printing paper, in order to prevent the two second mounting plates 431 from moving axially relative to the guide rod 420, fastening holes 434 extending to the circumference of the guide rod 420 can be opened on the second mounting plates 431, and positioning members can be set in the fastening holes 434 to abut against the guide rod 420. Under the action of the abutting force, the second mounting plates 431 can be prevented from moving axially.

[0036] In this embodiment, the fastening hole 434 can be a threaded hole, and the positioning element can be a bolt. The bolt is screwed into the threaded hole to abut against the circumference of the guide rod 420.

[0037] In some embodiments, the coating apparatus further includes a gap adjustment assembly 500 disposed on each side plate 100. The gap adjustment assembly 500 is used to adjust the gap between the first roller shaft 210 and the second roller shaft 220. The gap adjustment assembly 500 includes a linear drive member 510 disposed on the side plate 100. The telescopic end of the linear drive member 510 is provided with a driven seat 520. The second roller shaft 220 is rotatably connected to the driven seat 520.

[0038] Please see Figure 2 , Figure 3 as well as Figure 6 As shown, before each lamination, the film and the printed paper need to be placed between the first roller 210 and the second roller 220. If the distance between the first roller 210 and the second roller 220 is too small, it will be inconvenient for the film and the printed paper to enter between them. Furthermore, if it is necessary to laminate films and printed papers of different thicknesses, the distance between them needs to be adjusted. Therefore, this application adjusts the height of the second roller 220 by installing a gap adjustment component 500 on the inner side of each side plate 100, thereby changing the distance between the first roller 210 and the second roller 220, so that it can facilitate the feeding of films and printed papers, and can also be adapted to different thicknesses of printed papers and films.

[0039] Please continue reading. Figure 2 , Figure 3 as well as Figure 6 As shown, the linear drive members 510 on both sides synchronously drive the driven seat 520 at its position to move up and down, thereby driving the second roller shaft 220 to rise and fall, and thus changing the distance between the second roller shaft 220 and the first roller shaft 210.

[0040] In this embodiment, the linear drive 510 is a cylinder.

[0041] In one embodiment, a first guide groove 530 is provided on the side plate 100, and a roller 540 is provided at the end of the second roller shaft 220, with the roller 540 located inside the first guide groove 530.

[0042] Please continue reading. Figure 3 and Figure 6 As shown, in order to make the lifting and lowering of the driven seat 520 and the second roller shaft 220 more stable, a first guide groove 530 is provided on the side plate 100 along the height direction, and a roller 540 is rotatably installed at the end of the second roller shaft 220. The roller 540 is disposed in the first guide groove 530 and the second roller shaft 220 is rotatably installed on the driven seat 520. The first guide groove 530 limits the roller 540, thereby making the lifting and lowering of the driven seat 520 and the second roller shaft 220 more stable.

[0043] Please see Figure 2 , Figure 5 as well as Figure 6 As shown, in order to ensure that the printing paper and the laminated printing paper are always kept taut, a first winding adjustment component 601 and a second winding adjustment component 602 are respectively provided in the upstream and downstream directions of the laminating component 200. Specifically, the first winding adjustment component 601 tensions the unlaminated printing paper, while the second winding adjustment component 602 tensions the laminated printing paper. Therefore, in this embodiment, the first winding adjustment component 601 and the second winding adjustment component 602 have the same structure.

[0044] like Figure 5 and Figure 6 As shown, since the first winding adjustment component 601 and the second winding adjustment component 602 have the same structure and principle, the first winding adjustment component 601 will be used as an example here.

[0045] In some embodiments, a first winding adjustment assembly 601 is provided upstream of the coating assembly 200, and a second winding adjustment assembly 602 is provided in the path between the coating assembly 200 and the winding assembly 400. The first winding adjustment assembly 601 includes a connecting plate 610 fixedly disposed on each side plate 100, a fixing block 620 fixedly disposed on the connecting plate 610, a second guide groove 621 provided on the fixing block 620, an adjustment shaft 630 disposed between the fixing blocks 620, the end of the adjustment shaft 630 being located in the second guide groove 621, and the fixing block 620 having a first end and a second end, the first end being provided with a first sensor 641, and the second end being provided with a second sensor 642.

[0046] In this application, the first sensor 641 and the second sensor 642 of the first winding adjustment assembly 601 and the second winding adjustment assembly 602 are electrically connected to the controller. Correspondingly, the first rotary drive 230 and the second rotary drive 432 are also electrically connected to the controller. The controller can control the rotational speed of the first rotary drive 230 and the second rotary drive 432.

[0047] In this embodiment, the first end and the second end mentioned above are the uppermost and lowermost ends of the fixing block 620, which are also the uppermost and lowermost ends of the second guide groove 621. In order to prevent the end of the adjusting shaft 630 from disengaging from the second guide groove 621, it is necessary to limit the vertical movement distance of the adjusting shaft 630. That is, a first sensor 641 is set at the uppermost end and a second sensor 642 is set at the lowermost end for sensing and judgment.

[0048] Please continue reading. Figure 5 and Figure 6 As shown, the printing paper is wound around the lower part of the adjusting shaft 630 and contacts the surface of the adjusting shaft 630. Under gravity, the adjusting shaft 630 has a downward trend along the trajectory of the second guide groove 621. The gravity of the adjusting shaft 630 acts on the printing paper, thus keeping the printing paper in a tense state. If the printer upstream of the first winding adjustment assembly 601 has a faster output speed, the printing paper will move downward under the action of the adjusting shaft 630. When the adjusting shaft 630 moves to the position of the second sensor 642, the second sensor 642 sends the signal to the controller. The controller then determines that the adjusting shaft 630 is at its lowest position. At this time, the controller can control the first rotary drive 230 to increase its rotation speed to increase the lamination speed. The lamination speed is greater than... The speed at which the printer feeds the paper causes the paper at the first winding adjustment assembly 601 to move upward, causing the adjustment shaft 630 of the first winding adjustment assembly 601 to move upward until it reaches the position of the first sensor 641. At this point, the adjustment shaft 630 reaches its highest point. It can be understood that at this time, the first rotary drive 230 can reduce the lamination speed, making the lamination speed less than the printing speed, causing the adjustment shaft 630 to descend. By repeating the above operation, the adjustment shaft 630 and the paper can always move between the first sensor 641 and the second sensor 642, keeping the paper taut and preventing it from wrinkling due to slack.

[0049] In this embodiment, if the adjusting shaft 630 of the first winding adjusting assembly 601 descends, the adjusting shaft 630 at the second winding adjusting assembly 602 will rise under the influence of the rotation of the second mounting plate 431 winding the coated printing paper. If the adjusting shaft 630 at the second winding adjusting assembly 602 rises to its uppermost position, the second mounting plate 431 can be controlled to reduce the winding speed, thereby causing the adjusting shaft 630 at the second winding adjusting assembly 602 to descend. Similarly, when the adjusting shaft 630 at the first winding adjusting assembly 601 rises, the second mounting plate 431 rotates to wind the coated printing paper, causing the adjusting shaft 630 at the second winding adjusting assembly 602 to descend. If the adjusting shaft 630 at the fixed block 620 descends to its lowermost position, the controller can control the second mounting plate 431 to increase the winding speed, causing the adjusting shaft 630 at the second winding adjusting assembly 602 to rise. By cyclically controlling the above operations, the coated printing paper can always be kept taut during winding, preventing wrinkles from forming during winding due to slack.

[0050] In this embodiment, the first sensor 641 and the second sensor 642 can both be proximity switches or photoelectric sensors, etc.

[0051] In some embodiments, a rack 650 is fixedly provided on each fixed block 620, and a gear 660 is rotatably provided on the circumferential end of the adjusting shaft 630, and the gear 660 meshes with the rack 650.

[0052] like Figure 5 As shown, in order to make the lifting and lowering movement of the adjusting shaft 630 more stable, a rack 650 is fixedly installed on one side of the fixed block 620, and then a gear 660 is rotatably installed at the end of the adjusting shaft 630. The lifting and lowering of the adjusting shaft 630 is more stable under the meshing of the fixed block 620 and the gear 660.

[0053] To prevent adhesion, some films are placed on a base film, and the base film needs to be wound up when unwinding this type of film roll.

[0054] In some embodiments, a bottom film take-up roller 700 is also provided on one side of the film feeding roller 300, and the film feeding roller 300 and the bottom film take-up roller 700 are connected in a driving connection.

[0055] Please see Figure 2 As shown, a first drive wheel 810 is installed at one end of the film unwinding roller 300, and a second drive wheel 820 is installed at one end of the bottom film take-up roller 700. The first drive wheel 810 and the second drive wheel 820 are connected for transmission. When the film unwinding roller 300 rotates, it can drive the bottom film take-up roller 700 to take up the bottom film to achieve linkage, without the need for additional power components for driving.

[0056] For example, the first transmission wheel 810 and the second transmission wheel 820 can be sprockets, and the two can be connected by a chain for transmission. If the first transmission wheel 810 and the second transmission wheel 820 are both pulleys, the two can be connected by a belt for transmission.

[0057] In this embodiment, in order to guide the printing paper, a guide shaft 900 is provided between the laminating assembly 200 and the first winding adjustment assembly 601 for guidance.

[0058] See Figure 7 As shown, this embodiment also provides a printing device, which includes a laminating device and a printer 1000 as described above. The printer 1000 has a discharge end, and the laminating device is disposed on one side of the discharge end.

[0059] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0060] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A coating device, characterized in that, include: Mounting frame, the bottom of which is provided with casters (110). A coating assembly (200) includes a first roller (210), a second roller (220), and a first rotary drive (230). The first roller (210) and the second roller (220) are rotatably mounted on the mounting frame, and the first rotary drive (230) is connected to the first roller (210) in a transmission connection. A film-laying roller (300) is rotatably mounted on the mounting frame and is located upstream of the film-coating assembly (200). A winding assembly (400) is fixedly disposed on one side of the mounting frame and is located downstream of the coating assembly (200).

2. The coating apparatus according to claim 1, characterized in that, The mounting bracket includes two spaced-apart side plates (100), and at least one connecting rod is provided between the two side plates (100) for connecting the two side plates (100). The caster wheel (110) is provided on the connecting rod.

3. The coating apparatus according to claim 2, characterized in that, The winding assembly (400) includes a first mounting plate (410) connected to the two side plates (100) respectively, and at least two guide rods (420) are provided between the two first mounting plates (410). Two winding drive assemblies (430) are provided on the guide rods (420) at intervals.

4. The coating apparatus according to claim 3, characterized in that, The winding drive assembly (430) includes a second mounting plate (431) slidably disposed on the guide rod (420). A second rotary drive member (432) is fixedly disposed on one side of the second mounting plate (431). An abutment member (433) is disposed at the rotating end of the second rotary drive member (432). A fastening hole (434) is provided on the second mounting plate (431). A positioning member abutting against the guide rod (420) is disposed in the fastening hole (434).

5. The coating apparatus according to claim 2, characterized in that, The coating device further includes a gap adjustment assembly (500) disposed on each of the side plates (100), the gap adjustment assembly (500) being used to adjust the distance between the first roller (210) and the second roller (220); The gap adjustment assembly (500) includes a linear drive (510) disposed on the side plate (100), and the telescopic end of the linear drive (510) is provided with a driven seat (520), and the second roller shaft (220) is rotatably connected to the driven seat (520).

6. The coating apparatus according to claim 2, characterized in that, The side plate (100) is provided with a first guide groove (530), and the end of the second roller shaft (220) is provided with a roller (540), which is located in the first guide groove (530).

7. The coating apparatus according to claim 2, characterized in that, A first winding adjustment component (601) is provided upstream of the coating component (200), and a second winding adjustment component (602) is provided in the path between the coating component (200) and the winding component (400). The first winding adjustment assembly (601) includes a connecting plate (610) fixedly disposed on each of the side plates (100), a fixing block (620) fixedly disposed on the connecting plate (610), a second guide groove (621) being provided on the fixing block (620), an adjustment shaft (630) being disposed between the fixing blocks (620), the end of the adjustment shaft (630) being located in the second guide groove (621), the fixing block (620) having a first end and a second end, the first end being provided with a first sensor (641), and the second end being provided with a second sensor (642).

8. The coating apparatus according to claim 7, characterized in that, Each of the fixed blocks (620) is fixedly provided with a rack (650), and a gear (660) is rotatably provided at the circumferential end of the adjusting shaft (630), and the gear (660) meshes with the rack (650).

9. The coating apparatus according to claim 1, characterized in that, A bottom film take-up roller (700) is also provided on one side of the film feeding roller (300), and the film feeding roller (300) is connected to the bottom film take-up roller (700) in a driving connection.

10. A printing device, characterized in that, include: The coating apparatus according to any one of claims 1 to 9; A printer (1000) having a discharge end, wherein the coating device is disposed on one side of the discharge end.

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